Switch interlock device



Jan. 30, 1923.

BURNS lmsmocv DEVICE, I'LED OCT,

J SWITCH SHEETS'SHEET Jan. 30, 1923. 1,443,867

J. F. BURNS. SWITCH |NTERLOCK DEVICE. FILED OCT. 29. I917.

3 SHEEITIS'SHEET 2' 67 z o b nnlutch ziini open the (loo a Switch.Interlock De'a'h UNITED JAMES F pURNs, 2F 311m COMPANY, OF PHILADE VANIA.

Be it known that Ti .imins i lowing is it specili ution.

()ne object: ofihis inventionis to rovhlo a novel form and :1 i'i'angeinent of El; c' for so connecting the i-iwiicli-opei'zn 1 bet with a doohioelc, and moire gsznticnhii with the lock or latch for the door to a 4 containing box, that it shall be impo 1' until the an" actuated by said member has; been ope and zilso impossible to close he r'm'itch in. 1 the door has been 1 ii)'\i 21ml loclqeri in closed position' z the iH I-HMUZ. coi hiphiiing: an nf'l imgeinens whereb inj operator by reason of the blowing oi" or by reason oi coniact with iize e electric circuit is eziicrnolly IYPYPHi'fli.

Another object of the invention is; to pro vide mechanism of %ihe general i i ze QEiHH'Q noted with novel means; for 1)i' ,"?11'iii31j ope union oi the door-locking mhiiei n vice Whenszinl iiOOI is open mnl ihi possible the closure of the switch b' ClOOI' is eloseil anti 1 the also including: novel in switch operating which shall insure gagement and ilif'ii: able and liX'lii cont dependent of the speed member.

I finther le ire. to pro charm-t i' (iHSi i 7 whereby :1 plurality of :iilierent Eoche. be employed in retain the switch member and hence the so z-h in in i sition;-the HIHU". eni; being sovh is necessary for oi of Hihl ifliilf moved 0! rel zn-eii #eioie ihe closed.

Another object; oi my lHVI VitiO, :i novel form of n the im'eition coni'en nation as will permit of tiveiy to the switch box PEN minis-ii NS "EVA Serial Ho. 188,968.

'1 is a front elevation of a switch and box mounted in position for the at plication of 111:, invention:

hi Zia-=1 *eztifzii section illnstra tin the ietail consiinction and :1 iangenient my uterdock mechanism when file-switch is i 2171i the moor of fuse box is locked; 3 is 7'1 section ssdnihir to Fig. 2 but 151,9; the parts of the inteelocli niechm JObIiiiUX'lfi occnpieci when 'he .115!!! in ihe switch (pen and the door of the fuse box imiocl-ied and-open; and l ig. c is; a (1e acheii pe iective view illusthe detail cons? n tion oi certain of is cozwiitnting: my invention.

1' =h'ziwings. l repretenits :2 oox in stzii havi n i'enmwible s or bolts .1 electric w/iich. This latter inclinieq 2! lease 3% of Siillfi. marble or whiting nni'ieiiiii and in the present we is of Lhe (hBUiJiCf pole type, having A f (urinals %+i; to which are connecljed *c-eiiniinils 5 5. Said go have :1 pair oi jaws ii to ii 01 pivoted bhnies 7- 5. 1 m- 3 is a second pair clips or jaws 9 for 0 mom;

pi'oje' arms Li and 15 as well ii?- ed by a pivot tends sing I and. is pivo tieietii'ig men:- :n the o1 1 1 {HTS enii fUHl'lij'LiNl m a standard nn. 1 a piiot 0 from winch n. i itra upper endi)0i1-'i;,{ pnuvniexl with table mile 21.

Zha lower m; oi this opiating member vpei flie-viosingg 01' 70 431' first in (ti-ow 'n the handiv 60 wih h an zuwie of P 5)? in iine with the in'wer niknved f0 if he b i 3?. which is 1 opening 36 of the link 16. 30 swiivh 111911153! 18 with he switch s T -T may be now moved to their inner clawed poqlticm so as to permit i m ()winy to he 35,

i3 and and 6 1, it is: nut to he released ii a dour 58,, since them, M, bzmigfh't int f Zine to pew 35 of ihe iini: ii by the bolt Wm nssupies ainiiy ci-i'irs'wi m. Twisted by the springs A;

Hades are almost elem 0' ps 3 and said arms 1% and "iih 921th other. As the 0 155 a'nd blades;

eyonii such act t suit t ifiilfliy hi J 1 w tern'iinal clips )-9. in- I ujrwk of electric circuit. 10L

1 fihe switch nunhur is being ihe smite] nmw'g'ion until 9 {it pass a Jew puint, after assisted by said sm-ingg so that 110 k 1 in move 2.3 21 i. fly be time their engagement 1 clips 9*- air-0m ak ssripthm i3. Wiii ziimfro' i1, fuse but: has hem closed and ltiikitii am? smilm'iy the switch is locked ii-rm 21s iimp; as the (over of is in any position nther tin :1

therefore an impossibility for? 126 )piieii m the fusPs or" 0 b0 unini i he ionich in the: 00x 1 mp of imiustriai (inmm; switvh shni sorted throu opened while alterations or repairs are bemg made to the electrical apparatus supplied by said circuits; and in such if it be assumed that there are three such de partments,- the three foremcn or operators may apply three separate psdlocks 80, -81 and 82 with their liasps I'ifSPCCiJlVt-dj. in i the threcsetso'i holes 2E2--E35, 23-2S, and l-ilil as to loci; the switch operating member in a position in which the blades 'i---T are open. .llefor s the switch can beclosed to a ain supply current to the circuits controlled thereby, it will be necessary for all 0'1 said operators to unlock and remove their respective pedlocl-zs since as long as one padlock remains in position. the switch cannot. be operated. It is therefore an impo. lity for danmge or injury to be done by the pren'iature closure of the switch.

While l: have i f fuse box end hare described the device therein as fuses, it to be understood that without departing from my invenioion, any

other suitable form of circuit, breaking de-- vice or other electrically actuated instrument may be mounted within-said box.

' When the fuse box is applied the lower end or bot-tom d8 of the switch box, the locking bolt 3? with its spring is movably mounted in suitable openings formed in lugs or brackets 90 and 91 and the knockout .52 is removed for the reception of the merit (lord-he door of the fusebox being; hinged to the D0i3i0m instead of the top of the switch box. @bvionslg when the box is so applied, the bolt is given such a length as to cause it to function ss'above described, and after the knockout remover the opening thus provided is enlarged as may here ired to accommodate the scgmei'it l c aim 1. The combiimtion of a switch box; switch therein; 3, fuse be): having sdoor; a locking belt for the movable member of the switch; rot-airy lock for said door; end. means connected to transmit movement from the lock to the bolt and hold the letter in a switch locking, 'iiisition when the lock is in a door releasing position.

2. The combination of :1. switch box: a

switch therein; a 'tuse'box having kl door;

erred to the box 53 as a.

- vice said transmitting memes? men'zber; and mechanism for transmitting movement from said lock to the boltadji1st-- ed to prevent. release of the look when the switch is closed, the same including means tor. positively holding the bolt in a switclr locking position when the lock is in a doorrelcasing position. 4-. The combination of a switch box; a switch therein; a' fuse box having a door; a lock for said do0-r;'o'reciprocab1e switch operating member; a bolt for locking said member; and mechanism for transmitting movement from said lock to the boltatljusted to positively holdseid bolt in position to reteln theswitch in an open positionn'lien the door is opened), 1. I 5. The combination of a switch box; a switch therein; a fuse box having a door; a lock for said door; a, reciprocable switch operating member; a belt for locking said member; and a series of permanently en gag ed elements for transmitting movementfrom said lock to the bolt adjusted to cause. said bolt to retain the switch in anopen position as long as the door lock is released. 90. 6. The combination of a switch box; switch therein;'a fusebox having" a door; a lock for said door; a reciprocable switch operating member; a belt for lockingsaid member: and a bar longitudinally movable 95 by saiddoor lock for moving said bolt into position to hold the switch-operating memher when the switch is open and the lock is released. i

7. The combination of a. switch box; aswitch therein; a fuse box heving-egdoor; o lock for said door; a reciprocable switch operating member; a belt for lockingssid member including an arm and a; projecting pin; with 2. bar longitudinally movable by said door lock to move said bolt. through the pin into a position to hold the switch operating member with the switch. open when. the lock is released.

8. The combination of a switch box; a switch therein; afuse box having; a door; a locking bolt for the movable member of the switch; a rotary look or the door; means for transmitting movement from the lock to the bolt-forbidding said bolt in a switch locking position when the lock is in the door releasing position; and a deindependei'it of said transmitting means for preventing movement of the bolt when the door is opened.

9. The combination of a switch box; a switch therein; a fuse box havingfa door; a locking bolt for the movable member of the switch; a. rotary lock for thedooi'jmeons for transmitting movement from the lock to the belt for holding it vitch'loclting position when the lock. dooijreleaslog position; and

movement of the bolt when the 1 opened said device consisting of a curved segment carried by the door and presented thereby to the bolt.

10. The combination of a switch box; a switch therein; a fuse box having a door; a locking, bolt for the movable member of the switch; a spring tending to move said bolt to a releasing position; a lock for the door; means for transmitting: movement from said lock to the bolt to move and hold it, against the action of the sprin" in a switch locking position when said lock is in a door releasing position; and a device for preventing movement of the bolt by the spring when the door is open.

11. The combination or a switch box; a switch therein; a fuse box having a door; a looking bolt for the movable member of the switch; a lock for the door; and means carried by the door for transmitting movement from the lock to the bolt to hold the latter in a switch locking: position when said lock is in a door releasing position.

12. The combination of a switch box; a switch therein; a fuse box having a door; a locking bolt for the movable member of the si'i eh; a lock for the door; illtlliS carried by the door for transmitting movement from the lock to the bolt. to hold the latter in a switch locking position when said lock is in a door releasing position: and a device also carried by the door for preventing movement of the bolt when the door is open.

13. The combination of a switch box; a switch therein; a switqlf'hf operating member; a fuse box having a door; a look; a longitudinally movable member mounted on the door and actuated by said lock; and a bolt actuated by said door carried member for locking the switch operating member with the switch in an open position.

14. The combination ota. switch box; a switch therein; a switch operating member; a fuse box having a door; a look including a crank mounted on said door; and a bolt actuated by said crank and formed to interlock with'the switch operating member to positively hold it with the switch in an open position.

15. The combination of a switch box; a switrhtherein; a'switrh operating member; a fuse box having a door; 'a lock; a longitudinally movable member mounted on the door and actuated by said lock; a bolt act-uated by said door carried member for locking the switch operating member with the switch in an open position; and a spring "or moving the bolt independently of the loor carried member to release the bolt from he swii'cli operating member. r

iii. The combination of a switch box; a switch therein; a switch operating member; a link connecting the movable. member of the switch and said operating member; a fuse box having a door; a lock ii:- clndinp; a crank mounted on the door: and abolt moved by said crank, positioned to enter an opening inthe link when the switch operating member with the switch is in an open position.v

in witness whereof I 'allix my signature.

JAMES I BURNS. 

